A device for palletizing a plurality of articles and for stabilizing selected ones of the plurality of articles is provided. The device includes at least one load stabilizer and at least one stabilizer applier. The at least one load stabilizer includes a stabilizer sheet and an adhesive layer coupled with the stabilizer sheet. The at least one stabilizer applier receives the at least one load stabilizer and applies the adhesive layer to a select potential shift point of a palletized load.
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16. A method for operating a device for palletizing a plurality of articles and for stabilizing selected ones of the plurality of articles, the method comprising:
aligning the plurality of articles into a layer of articles on at least one door on an upper level of a palletizer;
stacking the layer of articles onto a pallet received on an elevator in an elevator shaft of a lower level of the palletizer to provide a palletized load by opening the at least one door; and
actuating a stabilizer applier assembly attached to a side of the elevator shaft in the lower level below the at least one door to adhere a load stabilizer to a top surface of at least two articles of the plurality of articles of the palletized load;
wherein the at least one stabilizer applier is configured to apply the at least one load stabilizer to a top surface of the at least two articles.
1. A device for palletizing a plurality of articles and for stabilizing selected ones of the plurality of articles, the device comprising:
an upper level for receiving the plurality of articles;
an elevator movable within an elevator shaft, wherein the elevator is configured to receive a pallet and the plurality of articles; at least one door movable to stack the plurality of articles from the upper level onto the pallet in a palletized load; and
a stabilizer applier assembly attached to a side of the elevator shaft in a lower level below the at least one door, the stabilizer applier assembly comprising:
at least one feeder configured to feed at least one load stabilizer, the at least one load stabilizer comprising an adhesive layer; and
at least one stabilizer applier configured to receive the at least one load stabilizer, wherein the at least one stabilizer applier is configured to apply the adhesive layer of the at least one load stabilizer to a top surface of at least two articles of the plurality of articles of the palletized load.
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This application claims priority to U.S. Provisional Patent Application Ser. No. 61/817,895, filed May 1, 2013, entitled “Device for Stabilizing a Pallet,” the disclosure of which is incorporated by reference herein.
The present disclosure relates generally to palletizing and palletizing loads for transit and is more particularly directed to a device that applies a load stabilizer to articles, containers, or cartons that are stacked onto a pallet for transit. The innovation will be disclosed in connection with, but not necessarily limited to, a device that applies a load stabilizer onto potential shift points of a palletized load and more particularly to a device that places an adhesive load stabilizer at potential shift points of the palletized load.
When articles are stacked one on top of the other, the higher the stack, the greater the tendency for the stack to fall over when subjected to a disturbance such as a transit or shipping load. When layers of articles are stacked on a pallet to create a palletized load for transit, the load has better stability due to contact between adjacent articles, but the load still suffers from height instability issues and the articles positioned on the outside columns can fall outwards unless stabilized.
When articles are palletized for transit in a commercially available palletizing machine, the palletized loading process can encounter the same column height and outside column stability issues. Previous solutions have included placing layer sized sheets of cardboard between layers, but these require large feeding and placement mechanisms in areas that compete for space, and require costly cardboard sheets.
Thus, there is a need for devices and methods to conveniently stabilize palletized loads with smaller mechanisms that eliminate the need for large and costly feeding and placement mechanisms.
The accompanying drawings illustrate embodiments, and, together with the specification, including the detailed description which follows, serve to explain the principles of the present innovation.
In the following description, like reference characters designate like or corresponding parts throughout the several views. Also, in the following description, it is to be understood that terms such as front, back, inside, outside, and the like are words of convenience and are not to be construed as limiting terms. Terminology used in this patent is not meant to be limiting insofar as devices described herein, or portions thereof, may be attached or utilized in other orientations.
It should be appreciated that any patent, publication, or other disclosure material, in whole or in part, that is said to be incorporated by reference herein is incorporated herein only to the extent that the incorporated material does not conflict with existing definitions, statements, or other disclosure material set forth in this disclosure. As such, and to the extent necessary, the disclosure as explicitly set forth herein supersedes any conflicting material incorporated herein by reference.
Elevator 208 is configured to receive pallet 28 and to move up and down as sequential layers of articles 40 are discharged from upper level 202 and stacked on top of pallet 28 to create palletized load 20. As shown in
Wrap ring 216 is positioned within lower level 204 and is motor driven to rotate about elevator shaft 210. Wrap ring 216 is shown sectioned and includes a roll of pallet wrap 218. Accordingly, when actuated, wrap ring 216 is configured to wrap palletized load 20 by rotating around palletized load 20 as palletized load 20 is moved up and down in elevator shaft 210. Wrap ring 216 thereby wraps the sides of palletized load 20 with pallet wrap 218 to stabilize the outer columns of palletized load 20. While wrap ring 216 of the present example includes a circular configuration, other suitable configurations for wrap ring 216 will be apparent to one with ordinary skill in the art in view of the teachings herein.
Upper level 202 of automatic palletizer 200 further comprises stabilizer appliers 50 supported by framework 212 of automatic palletizer 200 and positioned above palletized load 20 to place at least one adhesive load stabilizer 100 onto a top surface of palletized load 20. Load stabilizers 100 thereby hold articles 40 of palletized load 20 together to thereby decrease stability issues within palletized load 20. Stabilizer appliers 50 can place load stabilizers 100 on the uppermost layer of articles 40 on palletized load 20, or stabilizer appliers 50 can place load stabilizers 100 on top of each layer of articles 40 within palletized load 20. Alternatively, stabilizer appliers 50 can place load stabilizers 100 on a side surface of articles 40 of palletized load 20. This can be in addition to or instead of using pallet wrap 218. Still other suitable configurations for stabilizer appliers 50 and/or load stabilizers will be apparent to one with ordinary skill in the art in view of the teachings herein.
Adhesive layer 104 of load stabilizer 100 is positioned on release liner 105. The portion of release liner 105 coupled to adhesive layer 104 is formed from a wax or other slick material to provide protection of adhesive layer 104 until release liner 105 is removed prior to the application of load stabilizer 100 to palletized load 20.
Stabilizer applier 55 is configured to receive load stabilizer 100 from feeder 51. Stabilizer applier 55 is disposed adjacent to peel bar 54 and comprises a vacuum pad 56 to receive the peeled load stabilizer 100. With vacuum applied to vacuum pad 56, load stabilizer 100 is held against vacuum pad 56. In the present example, stabilizer applier 55 is movable to extend outwardly through opening 59 of exterior case 50a to place load stabilizer 100 against palletized load 20. Stabilizer applier 55 is then retracted back within exterior case 50a to receive the next load stabilizer 100. Stabilizer applier 55 is reciprocated up and down by a motor (not shown). Other suitable configurations for operating stabilizer applier 55 will be apparent to one with ordinary skill in the art in view of the teachings herein.
Once load stabilizer 100 is peeled from elongated strip 106, elongated strip 106 passes around liner guide 57 and wraps around drive pulley 58. Accordingly, idler pulley 53 and liner guide 57 are positioned adjacent peel bar 54 to maintain the alignment of elongated strip 106 relative to peel bar 54. Drive pulley 58 is rotatably driven by a motor (not shown) to wrap elongated strip 106 around drive pulley 58. Drive pulley 58 includes a release liner engagement feature such as slot 58a that is configured to engage with and pull on a free end of release liner 105 as drive pulley 58 rotates. Accordingly, drive pulley 58 rotates to thereby rotate liner guide 57, idler pulley 53, and feed roll 52 to pull elongated strip 106 from feed roll 52 to drive pulley 58. Drive pulley 58 thereby wraps the empty elongated strip 106 onto drive pulley 58.
Turning to
Another example automatic palletizer 300 is shown in
Stabilizer applier assemblies 350 are positioned within lower level 304 and extend laterally within elevator shaft 310 to apply load stabilizers 100 to palletized load 20. As shown in
The foregoing description of an embodiment has been presented for purposes of illustration and description. It is not intended to be exhaustive or to limit the invention to the precise form disclosed. Obvious modifications or variations are possible in light of the above teachings. The embodiment was chosen and described in order to best illustrate the principles of the invention and its practical application to thereby enable one of ordinary skill in the art to best utilize the invention in various embodiments and with various modifications as are suited to the particular use contemplated. Although only a limited number of embodiments of the invention are explained in detail, it is to be understood that the invention is not limited in its scope to the details of construction and arrangement of components set forth in the preceding description or illustrated in the drawings. The invention is capable of other embodiments and of being practiced or carried out in various ways. Also, specific terminology had been used for the sake of clarity. It is to be understood that each specific term includes all technical equivalents which operate in a similar manner to accomplish a similar purpose. It is intended that the scope of this provisional filing will be better defined by the claims submitted with a later non-provisional filing.
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